Method of and apparatus for lining furnace-fireboxes



F. HARDINGE.

METHOD OF AND APPARATUS FOR LINING FURNACE FIREBOXES.

APPLICATION FILED SEPT. 20, 1920.

1,393,777. Patented 00%. 1s, 1.921.

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@Womga UNITED STATES PATENT OFFICE.

FRANKLIN HARDINGE, OF CHICAGO, ILLINOIS, ASSIGNOR -TO HARDINGE BROTHERS INC., OFOI-IIGAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

Specification of Letters iatent.

' Patented Oct. 18, 1921.

Application filed September 20, 1920. Serial No. 411,414.

To all whom it may concern:

. Be it known that I, FRANKLIN HARDINGE, a citizen of the United States, and resident of Chicago, in the county of Cook and State of Illinois, have invented a certain new and useful Improvement in Method of and Apparatus for Lining Furnace-Fireboxes, of which the following is a full, clear, concise, and exact description, reference being had to the accompanying drawings, forming a part of this specification.

My invention relates to improvements in an apparatus for, and method of, constructing the bed of the firebox of furnaces and more particularly furnaces using oil burners of the type described and claimed in my 00- pendin application, Serial No. 380,794, filed Mt ty 12, 1920, wherein a rotary spindle is arranged to rotate an atomizing nozzle operating in the fire box.

The principal object of my present invention resides in the provision of an apparatus of the character described, which is simple in construction, and easily manipulated, and whereby an unskilled workman may quickly build the fire box bed of a furnace absolutely true and concentric with respect to the rotary spindle and atomizing nozzle adapted to operate in thefire box.

The foregoing and other objects of my invention will beapparent from a consideration of the following detailed description taken in connection with the accompanying drawings, wherein- V Figure 1 is a vertical sectionof a furnace fire box'illustrating the rotary spindle of an oil burner located therebeneath on which my improved apparatus is mounted-, in coacting relation, for constructing the bed of the furnace fire box, and

Fig. 2 is a plan view of Fig. 1, certain portions of the fire box bed being broken away to disclose more'clearly the details of the supporting structure therebeneath.

The same reference numerals designate the same parts in the two views.

Referring to the drawing, the reference numeral 5 designates the furnace fire box, which is preferably of metal and conformed to provide an annular rib 6. Supported upon the rib 6 are-the metal cross bars 7 and 8, to which are bolted on the nether side the angle iron supports9-9 A hollow, conical ring 10, which in operation surrounds the burnerjas 'described in my co-pendmg ap pl cation, above mentioned, is provided with a plurality of laterally projecting lugs 11, wh ch rest upon the angle iron support 9, and are vertically adjustable thereon by means of adjusting screws 12. The ring 10 i hole 16 is provided. A pipe may be threaded intothe hole 16 for'draining the trough 15. A ring 17, supported by the cross bars 7 and 8, in turn supports a plurality of sheet metal sectors 18 which have overlapping, interlocking edges 19. The inner ends of the sectors 18 rest upon the upturned edge of the ring 10 and at their outer ends are supported by the ring 17, at such an elevation that the sheet metal ring formed by the sectors l8 inclines downwardly toward the center of the fire box as illustrated. The outer ends of the sectors 18 are preferably flanged upwardly as shown at 20. Fire bricks 21 are arranged in a circle around the vertical sidesof the fire box 5 and are supported at their lower ends by the sectors 18.

Having described the details of the fire box and the fire box bed supporting structure, Iiwill now proceed to a detailed description of theapparatus which I propose providing for constructing the fire box bed and conforming the upper surface thereof.

Illustrated at 22 is the rotary spindle which, during operation of the furnace, as described in my aforesaid co-pending application, is adapted to rotate an atomizing nozzle. The means fordriving the spindle 22 is conveniently located in the llOllSlIlg' 23 which is carried upon a base plate 24:. The base plate 24: is slidably mounted upon the bed plate 25, which comprises the longitudinally extending rails 26 and 27, the former of which is flat on its upper surface, and the other of which is in the form of an inverted V rail. By this means, the base plate 2% is movable longitudinally of the bed plate 25to position the spindle 22 as desired. Mounted'upon the spindle 22, and

spindle 22 as a center.

having screw threaded relation therewith, is a member 28, which is provided with a plurality of radially extending arms 29, the outer ends of which are machined, as at 30, on a circumference having the axis of the trally, relative to the fire box. The surfaces,

being. machined very accurately, insure against maladjustment of the ring relative to the spindle.

The member 28 iscentrally bored as at 32 to provide a bearing for a pin 33extend1ng downwardly from the inner end of a sweep 3d. The sweep 34 is suitably conformed on its lower and outer edges to the desired contour and is provided with a handle 35, adjacent its outer end, whereby it may be swung around in a horizontal. plane on the pin 33. V In constructing the bed of the furnace fire box, the supporting; structure, comprising the cross bars and angle iron supports, is placed in position upon the'annular rib 6, the spindle 22 is then brought into position at approximately the center of the fire box beneath the supporting structure, the base plate 24 being moved along the bed plate 25 on the rails 26and 27, and being suitably permanently secured in position. The member 28 is then fixed upon the spindle 22 by threading the same thereon, or, if desired, the spindle may be driven slowly from the drive shaft to screw the same into the member 28. The ring 10 is then placed upon the member 28, so that the'lugs 31 rest upon the shoulders 30. The screws 12 are then adjusted properly to level the ring 10.

hen the screws 12 areso adjusted that the ring is level and true with respect to the member 28 andspindle 22 it will not be necessary to, further adjust these screws to properly position the air vane ring, above mentioned, with respect to the rings of the atomizing nozzle, because the shoulders 30 of the member 28 are very-accurately machined to-avoid the necessity for this.

After the ring 10 is properly positioned,

' the ring 17 is then placed upon the cross bars 7 and 8, and the sectors 18 placed there upon. The firebricks 21 may then be placed and cemented in position, whereupon the space between the lower ends of the fire bricks and the ring 10 may be filled in with plastic fire clay, and conformed as shown at 36 -by means of the sweep 34:, which may be-swungaround in a horizontal plane on "the pin 33, by means. of the handle 35.

It will be apparent that the above operations :may befeasil y accomplished by an unskilled workman, and require'little time.

After theffire box bed-has been completed,

The portion 30 is the sweep 34: is removed by lifting the same out. The member 28 is then turned lightly,

so that the outerends of the arms 29 do not 22 in a direction opposite that in which it is driven when the member 28 is mounted upon the spindle. The member 28 is then removable by lifting the same out. The air vane ring may then be placed in position on the shoulder 13'of the ring 10, and the atomizing nozzle screwed upon the spindle in operating position in place of the member 28. f 1 l lVhile I have described the details of the preferred embodiment of my invention, it is to .be clearlyunderstood that my invention is not limited to these details, but is ca pable of other adaptations and modifications within the spirit'and scope of the apended claims. r i

What I claim is: I 1. The combination with a machine for burning fuel oil, comprising a rotary spindle for rotating an 'atomizing' nozzle, of means for co-acting with said spindle in forming the bed of the fire box ofv the furnace in which said atomizing nozzle is to operate, comprising a member having screw thread-ed engagement with said spindle and provided with a plurality of arms for supporting'a ring forming a part of said fire boxbed, and .a sweep, for conforming the upper surface of thefire'boxj'bed, rotatably mounted on said member.

2. The combination with a machine for burning fuel oil, comprising a rotary spindle for rotating an atomizing nozzle, of means for co-actingwith said spindle" in forming the bed of thefire box of the furnace in which said atomizing nozzle is to operate, COHlPlflSll'lgfl. member havmg screw threaded engagement with said-spindle and provided with a plurality of arms for supporting a ringforming a part of said fire box bed.

The. combination machine for burning fuel oil, comprising a rotary spindle for rotating an atomizing nozzle, of means for co-acting with said :spindleyin forming the-bed of the firebox of the furnace in which said atomizing nozzle is :to operate,

comprising :a member having screw threaded engagementwith said spindle, and a sweep for conforming the upper surface of said firebox bed rotatably mounted onsaid member 4. The combination with -;a machine for burning fueloil, comprising a rotary spindle for rotating ,an atomizlng, nozzle, of means for .coacting with said spindle in forming the bed :of'the fire box of the furnace in which' said atomizing nozzle isqto operate, comprising a member having @screw threaded engagement with said spindle, and means for supporting a ring forming a part of said fire box bed.

5. The combination with a machine for burning fuel oil, comprising a rotary spindle for rotating an atomizing nozzle, of means for co-acting with said spindle in forming the bed of the fire box of the furnace in which said atomizing nozzle is to operate, and a sweep rotatably mounted on said spindle for conforming the upper surface of the bed of said fire box.

6. The combination with a machine for burning oil, comprising a rotary spindle for rotating an atomizing nozzle, of means coacting with said spindle for positioning a ring forming a part of the bed of the fire box of a furnace, comprising a member having screw threaded engagement with the 11pper end of said spindle and provided with a plurality of arms for supporting said ring.

7. The combination with a machine for,

burning oil comprising a rotary spindle for rotating an atomizing nozzle, of means coacting with said spindle for positioning a ring forming a part of the bed of the fire box of a furnace, comprising a member having screw threaded engagement with the upper end of said spindle and provided with a plurality of arms for supporting said ring, said member being centrally bored to provide a bearing for a sweep for conforming the upper surface of said fire box bed.

8. The method of constructing the bed of the fire box of a furnace, which consists in placing a part of the furnace oil burner beneath said fire box with which the fire-box bed is to be constructed concentric, positioning a ring forming a part of said fire box bed concentric relative to said part, filling 4 in plastic fire clay around said ring, mounting a sweep on said part and rotating said sweep to conform the upper surface of the clay to form the bed of said fire box.

9. The method of constructing the bed of 4 the fire box of a furnace which consists in placing a part of the furnace oil burner beneath the fire box with which the fire-box bed is to be constructed concentric, mounting on said part a member provided with a plu- 5 rality of arms, placing a ring on said member to form a part of the fire box bed, filling in plastic fire clay around said ring and conforming the upper surface of said fire clay to form the bed of said fire box. 5

10. The method of constructing the bed of the fire box of a furnace, which consists in placing a part of the furnace oil burner beneath said fire box with which the fire-box is to be constructed concentric, mounting thereon a member comprising supporting arms, placing a ringon said supporting arms to form a part of the fire box bed, filling in plastic fire clay around said ring, mounting a sweep in said ring supporting member, and rotating said sweep to conform the upper surface of said fire box bed.

In witness whereof, I hereunto subscribe my name this 14th day of September, 1920.

FRANKLIN HARDINGE.

Vitnesses:

EDNA V. GUSTAFSON, EMILE J. BoUneEoIs. 

